Table 6.

Results at 36 months: a comparison over 12 and 24 months.

Tests at 36 months	Over baseline	Over 12 months	Over 24 months
Clinical dementia rating	+1.22 ± 0.4 P < .01	+0.85 ± 0.2 ns	+0.14 ± 0.21 ns
NeuroPsychiatric inventory	+31. 58 ± 6.4 P < .01	+24.19 ± 5.9 P < .01	+9.19 ± 5.9 P < .01
Barthel index	−28.04 ± 3.4 P < .01	−25.17 ± 3.4 P < .01	−13.57 ± 3.4 P < .05
Instrumental activity of daily living	−2.1 ± 1.2 P < .05	−1.7 ± 0.3 P < .05	−0.4 ± 3.4 ns
Hachinski ischemic score	−1.18 ± 0.2 P < .05	−0.7 ± 0.3 ns	−0.2 ± 0.1 ns